Apparatus for feeding continuous working wood grinders



4 192 Oct P. PRIEM APPARATUS FOR FEEDING CONTINUOUS WORKING WOOD GRINDERS I 2 shBts-sh t 1 Filed 1925 INVENTOI? ZuZ E i ATTOHNEK P. PRIEM APPARATUS FOR FEEDING commuons 101K114 woon enmn'sns Filed Jan.5, 1925 x 2 Sheets-Shut 2 IN VENTOR ATTORNEY.

V. 2R2 flier Patented Get. 4, 1927. 1

UNITED STATES r 'ri zur OFFICE.

PAUL PRIEM, OF HEIDENHEIM-ON-THE-BRENZ; GERMANY.

APPARATUS FOR FEEDING CONTINUOUS WORKING WOOD GBINDERS.

Application filed January 3, 1925, Serial N0. 420, and in Germany August 16, 1924.

This invention relates to apparatus for feeding continuous wood grinder of the type generally known as magazine grinders, and

has for its object to improve such feeding mechanism of the. belt conveyor type in which the charge is engaged fora distance below the feed hopper for subjecting it to pressure on the grindstone. f

In accordance with this invention the feeding apparatus comprises a pair of belt conveyors in parallel relation on opposite sides of the feed hopper extending upwardly from the grindstone. The belt members thereof comprise flexible chain, band orf rope belts to which spaced cleats are secured. These belts are supported on upper and lower sets of driving and guide wheels with the driving wheels engaging the cleats in a driving relation, and between the driving wheels are sets of supporting anti-friction rollers which are arranged back of the sections of the belt which engagethe charge of logs which are fed into the hopper.

Such belt or chain conveyor types of feeding mechanisms are usually provided with carrier cleats which are pivotally joined to the chain, band or rope belts, and these pivotal connections are subject to considerable wear and they need careful greasing. By the present invention such pivotal connections are avoided by permanently securing the carrier cleats to the belt members and arranging them with free yieldable intervening sections which will allow the chains, bands or ropes forming the belt to follow closely on the driving or guide wheels. The conveyor belt and cleat members may be arranged in different ways and modified within the spirit of this invention, and various embodiments thereof are shown and described hereinafter. v

, The invention will be more fully shown in the accompanying drawings and hereinafter described and finally pointed out in the claims.

In the accompanying drawings Figure 1 is a vertical central section of a continuous wood grinder showing an application of the-improved features in accordance with this invention;

Figure 2 is a vertical sectional view taken through a belt carrier comprising a chain and cleats constructed in accordance with the invention;

Figures 3 and each show verticalsections of embodiments in which the conveyor members are mounted on hands;

Figure 5 isa similar vertical section of the conveyor members which are mounted on a rope, and

. Figure 6 is an end elevationpartly in section of an embodiment in which the conveyor parts form parts of the carrier chain itseli Similar characters of reference indicate corresponding parts throughout the various views.

Referring to the drawings and'more particularly to Figure 1, a magazine grinder containing a charge of wood to be round is therein shown, the upper part or hopper being generally indicated by'the reference number 10. The lower portion of the magazine 11 extends downwardly in the proximity of the grindstone 12. The'side walls 13 and'l l of the magazine are open to provide spaces for conveyor belts 15 and 16 to engage the charge of logs along opposite sides as shown. These belts are mounted on driving spur wheels 17, 18, 19 and 20, which are driven by any suitable driving means (not shown) in a manner to cause the inner faces of the belts to operate on the charge I so as, to force it downward towards the grindstone- Adjacent to these inner or operating' sections of the belts, the belts are arranged to pass over series of anti-friction rollers 21 and 22 which facilitate in the operation of the feeding mechanism.

Figure 2 shows one embodiment of the conveyor members comprising conveyor cleats 23'whi'ch are each secured to a link chain 24 by means of screws or rivets 25 so as to permanently secure the parts in place. Between each conveyor cleat and the next there is a section of chain 26 which is free andyieldable.

Each of the cleatmembers 23 is formed with 'a' charge or log engaging portion 27 and an upper inclined portion 28, while the interior portion thereof is formed hollow and provides a projecting driving portion 29 which is adapted to be engaged by projecting spurs 30 on the driving wheels as indicated in Figure 1. f i According to the'embodiment of the conveyor belt shown in Figure 3, the band 31 serves as a belt member and so port for conveyor cleats 32. These, cleats l iave'the same generahinner and outer contour as j the cleats 23, and may be secured inany suitable manner to the band 31 as by rivets and screws 83 and 34; In this form the screws 34;, not only secure the band, but also the driving portions 35 of the cleats.

In the en'ibodiinent shown in Figure 92, a band 36 is illustrated to which a cleat member 37 is secured by welding the contacting edges as indicated by 38. v ,1

Figure 5 illustrates a tii'r'ther em'b'odimei'i't of the conveyor in which the conveyor belt comprises a rope 39. In this construction the conveyor cleats comprise an outer section 40 conforming inshape with the outer portion of the cleat member 23,- and an inner section 41, which has an interior porton conforming with the interior of said cle'at members 2 3. These members 40 and ll are conveniently seeured together wit a section or the rope 39 between them by means of a series of screws 42. V I

Figure 6 illustrates a still further embodiment or the invention wherein conveyor cleats 43 have secured to their ends end members 4% as by means of screws or the like 45. These end members let are made with a link construction 46 which is connected with the links 47 so as to form there with the conveyor chain, l 7

It is pointed out that in each of the various forms the conveyor belt is permanently fastened to the cleat members, and afflex i'ble portion is arranged between them, Each of the conveyor belt member-s is further characterized by an interior hollow portion with a drivingengaging surface as in Figure 1 which is adapted to be eligaged by the projecting spurs 30 on the driving wheels. These driving portions may be formed any suitable length along the cleats for their engagenient with the driving wheels, while the ends of the cleats and chain, belt or rop'e members mayrest on suitable uide wheels. But rincipally the driving 0? the belt is accomplishe'd'tlirough the driving relation of the driving wheels with the cleat members. The width of the inner driving portion of the cleats is such as toafiord at posij tive driving engagement \vi'ththe s'pursB O of the driving'whee'ls, and as shown in Figures 2 and 6, they have extended projectioiis 29 and 48 which insure a deepse'ati'ng thereor fvvith the spa of the driving ivh'eel,

se eral embodiments of, this invention haves-sen shown is the accoifipawng ings and described i lt he fore l-ngspec fication, set it is not detracts have the invention limited to details ther of as as not specificall enter into the spirit time invention as defined in following Having set it its this *inventioitwnat is claimed and desired to be secured by Letters Patent is ---1 l, r 1. In a: c moms woodworking qiinder having a grin stone a aagaziqn or hope above the same, and a teavsylng" means;

magazine hopper t6 the grin had was seefisastnreesf; an

separate cleat members fixedlysecured to the conveying means at spaced intervals, providing means entering into the sides o1 the magazine 'or hopper for moving" the wood towards the g'rindstoneand providing yieldable sections of the conveying means between the separate cleat ineinlo'eis.-

In a continuous wood working grinder having grin'dst'one, magazine or hopper above the same and a conveying means at opposite sides of the magazine or hopper; a series of spaced separate clea't members se" cured to the conveying means providing intermediate flexiblec'o'nnections between said separate cle'a'tmembers. V g

3. In a continuous wood working grinder having a grindstone, a magazine or hopper above the same and conveying means atopposite sides of the magazine or hopper; a

series: of spaced cle at lnembers formed on one side with an operating surface and on the other side with a driver" engaging surface, secured to the conveying means at spaced iiitervals leaving a flexible yielding connection between the cleat members.

4. In a continuous wood working grinder having a grindstone, a magazine or hopper above the same and a" c'onvey'er in the pro ini'it'y of the grindsto'ne and extending upw'a'rd tor a distance above the same separ'ate cileat members with surfaces extending into the interior of the magazine or hopper, said clea't members being fixed at certain points of the conveyor so as to stiffen those parts of the conveyer, but leaving flexiliile the connections b'eti'v'een the cleat members; a" series of rollers, backing the portion ot the conveyer adjacent to the magazine or h "pp'er and extendiii'g upwardly above the gindsto'ne sofas to hold the hopper fornipart of the conveyeir rigid against lateral bulging, but allowing a temporar and chaiige'able adjustment or the single 01am low connections Between the treat niemtsrsaad a driving connection between the cleatnieiiibers and 'th 1 wheel sh p p i 7 e. In a: continfious woes working; ider having 'a 'gfi'ndstone', a' magazine or hop-per above the same, conveying; means on each side of the hopper iii parallel felat-ion with each other and eit'tending upv'va-rdlyabove the gr inssasae for feeding mam-m1 "is the dst Wheel s i at ,tI-i-e supports for the conveying for driving said wheel supports; cleat members having' interior driving connections with the wheel supports and secured to said conveying means, said cleat members being spaced from each other allowing a flexible connection of the conveying meansbetween the clea-t members.

7. In a continuous wood working grinder having a grindstone, a magazine or hopper above the same, conveying means on each side of the magazine or hopper in parallel relation with each other and extending upwardly above the grindstone for feeding material in the hopper to the grindstone, wheel supports for the conveying means at the upper and lower sections thereof and means for driving the wheel supports; the combi nation of a series of spaced cleat members on said conveying means projecting into the magazine or hopper and having at their opposite sides driving connections engaged by the wheel supports.

8. Conveyer for continuous wood working grinders, comprising; a separate continuous belt like acting conveying means, supported by a set of upper and lower guiding wheels with driving sprockets; a series of separate cleat members, fixed on the said conveying means at intervals spaced from each other; abutments provided at the one side of the cleat members adapted to insure a deep seat ing of the sprockets or spurs of the driving means.

9. A conveyor for continuous Woodworking grinders comprising a continuous flexible conveying means, a series of cleat members secured at spaced intervals to said conveying means, the front side of said cleat members having surfaces adapted to engage the charge of a continuous wood grinder, and the rear surfaces of said cleat members having a portion adapted to be engaged by a driving means of a wood grinder, said cleat members being spaced along the-conveying means to have the-interior driving portion of the cleat members register with the said driving means.

In testimony that I claim the foregoing as my invention, I have signed my name hereto. 7 i

PAUL PRIEM. 

